Another OHV M90 build

[jd4242]

hey don

http://www.interlakedragway.com/

O its on!!i ran a 14.3 1/4 on the 3.25!

 

[Dono]

M style M90? I havnt seen one for the Ford Supercoupe M90.

 

[jd4242]

M style M90? I havnt seen one for the Ford Supercoupe M90.

I think they are the same size but one is keyed.the ones that are keyed i don't think are tampered or press on,ill have to search but why wouldn't they make a quick swap?

 

[Dono]

O its on!!i ran a 14.3 1/4 on the 3.25!

Wow! I'm just hoping for high 14's. Way to go JD. That's amazing.

 

[Dono]

I have never seen a quick swap for the keyed style. Initially, I had shimmed out the pulleys and found that was a bad idea as there is still a taper on the shaft, and the pulley was wobbeling a bit. I trashed the woodruf key and a pulley. So, even though the pulleys are not exactly 'press on' the pulley has to fit the tapered shaft.

This makes sense as the little woodruf key would be taking a ton of stress on its own otherwise.

 

[jd4242]

Wow! I'm just hoping for high 14's. Way to go JD. That's amazing.

Hahah i was totally just joking14ish is real good.i really do need to do a track run and time it.the place i did it last time with 3.73 and 33 i ran like a sorry high 17 at 78mph,basically stock time.i ran the same place with xeek and 3.25 pulley,we slide all over the place and i hit 85mph in 2nd and about half the distance of the 1/4 and got scary so i let off way early .i honestly don't know if i have the balls to do a 1/4 now,willing to bet it will be well over 110ish...that's to fast in my truck:'(

 

[jd4242]

I have never seen a quick swap for the keyed style. Initially, I had shimmed out the pulleys and found that was a bad idea as there is still a taper on the shaft, and the pulley was wobbeling a bit. I trashed the woodruf key and a pulley. So, even though the pulleys are not exactly 'press on' the pulley has to fit the tapered shaft.

This makes sense as the little woodruf key would be taking a ton of stress on its own otherwise.

Yep ill have to search.i don't really know alot about the ford model .

 

[Dono]

With my truck having stock tires, and no lift it still has pretty good road manners, so I'm good to rip gown the quarter. I'm not making the power you are either.

Please see if you can find a quick swap for my style of M90, I couldn't find one. Depending how it would mount, it could be a solution to my issue.

 

[jd4242]

With my truck having stock tires, and no lift it still has pretty good road manners, so I'm good to rip gown the quarter. I'm not making the power you are either.

Please see if you can find a quick swap for my style of M90, I couldn't find one. Depending how it would mount, it could be a solution to my issue.

Shoot im willing to bet your putting down more than me!!atleast to the groundim sure ill man up and do a pass but it will be scary ! ill research it for sure,love learning

 

[Dono]

I'm ready for the dyno. I've done the brown wire mod with a switch, so I have selectable 4x4 on a switch. In the next few weeks I'll have some numbers to post.

 

[jd4242]

I'm ready for the dyno. I've done the brown wire mod with a switch, so I have selectable 4x4 on a switch. In the next few weeks I'll have some numbers to post.

HELL YEA !!as we both know the number might not be high but WAY better than any other exwe are in the "ELITE SUPERCHARGED "hahah

 

[Dono]

Machine shop says they can build me a spacer to space the pulley out further and keep it a friction fit.
I have given them the shaft from my other M90, and the pulley to make something up.
Moving the mounting plate of the M90 mount would not be an easy thing. If the top or bottom of the mount were cut off and moved, I'd have issues with re-mounting to the lower intake as all the holes for sneaking a ratchet thru would no longer line up. Also, there's the case of the bypass valve, moving just the M90 forward would make the valve not line up anymore.

Lets see how the machine shop does with the spacer.

 

[jd4242]

Machine shop says they can build me a spacer to space the pulley out further and keep it a friction fit.
I have given them the shaft from my other M90, and the pulley to make something up.
Moving the mounting plate of the M90 mount would not be an easy thing. If the top or bottom of the mount were cut off and moved, I'd have issues with re-mounting to the lower intake as all the holes for sneaking a ratchet thru would no longer line up. Also, there's the case of the bypass valve, moving just the M90 forward would make the valve not line up anymore.

Lets see how the machine shop does with the spacer.

Its a press on right?is their a bolt also?how have you been removing and mounting these pulleys all these times?i would not even consider moving the lower mount,way to much.

 

[Dono]

It's not a press on like yours, but more of a friction fit with Woodruff key, and a bolt on the end. I use a 3 jaw puller to start pulling it off.
I think a spacer made properly will work. The washers I used it he first time was probably the right idea, but wrong approach.

 

[RangerSVT]

Another option would be to make a 1/2" spacer between the snout and the blades section of the housing, and a 1/2" thicker puck would work without having the pulley further out. Moving the entire snout out also gives the shaft more/better support...

SVT

 

[Dono]

Another option would be to make a 1/2" spacer between the snout and the blades section of the housing, and a 1/2" thicker puck would work without having the pulley further out. Moving the entire snout out also gives the shaft more/better support...

SVT

That is an excellent option. Great idea.
Im pursuing the easier option right now of the spacer on the shaft, but maybe I'll start checking to see if its possible to get a puck thats 1/2 inch.

I agree, moving the pulley further out on the shaft creates far more stress on the snout bearings.

 

[Xeek]

Hahah i was totally just joking14ish is real good.i really do need to do a track run and time it.the place i did it last time with 3.73 and 33 i ran like a sorry high 17 at 78mph,basically stock time.i ran the same place with xeek and 3.25 pulley,we slide all over the place and i hit 85mph in 2nd and about half the distance of the 1/4 and got scary so i let off way early .i honestly don't know if i have the balls to do a 1/4 now,willing to bet it will be well over 110ish...that's to fast in my truck:'(

it was raining. and i dont think you do either. grow some and track it!

 

[Dono]

HA!
Talking about being called out.

Good one!

 

[rocket 5979]

That is an excellent option. Great idea.
Im pursuing the easier option right now of the spacer on the shaft, but maybe I'll start checking to see if its possible to get a puck thats 1/2 inch.

I agree, moving the pulley further out on the shaft creates far more stress on the snout bearings.

Just remember that if you space the front drive out you also increase gear case volume which means that your previously required 8oz of gear oil will not be at a sufficient level to reach the bearings. You will have to add more so nothing burns up under no lubrication.

 

[Dono]

Great to see you around Rocket!
I'm going to try the easiest option first.

I have a feeling even the plate would be expensive to manufacture.